baber/WOPTO huggingface dataset:
Patent GB-572391-A (GB)
Title: Production of pre-stressed concrete sleepers and similar beams
IPC: B28B23/04
Filed: 1943-07-26
Abstract: 572,391. Moulding pre stressed reinforced concrete sleepers. DOWSETT ENGINEERING CONSTRUCTION, Ltd., BARBER, R. S. V., and LESTER, D. R. July 26, 1943, No. 12154. [Class 87-(ii)] In a method for the production of concrete sleepers having tensioned reinforcing wires therein, the wires being arranged parallel to each other in production lines, the supply of clean empty moulds to the production lines and the discharge of full moulds containing hardened' sleepers (or of empty moulds and sleepers separately) are effected by means of transversely-disposed conveyers or runways. Fig. 1 is a plan view of a plant lay-out comprising four production lines PL in two pairs, the reinforcing wires 18 being stretched between pedestals (not shown) at the ends of the production lines. Clean empty moulds are introduced along a transverse track 19, and the full moulds are discharged along a second transverse track 26, both tracks being disposed below the production lines. Fig. 4 shows a device for shutting off one side of a production line, to prevent transmission of vibrations to filled moulds. The device comprises a troughshaped box 35 which surrounds the wires and is filled with sand, the sand being pressed down by a lid 37 and screw spindle 38. Specifications 572,385, 572,387 and 572,390 are referred to.
Patent GB-1123781-A (GB)
Title: Propellent compositions
Inventor: HACKETT CLARENCE BERTRAM
IPC: C06B45/10
Filed: 1964-03-23
Abstract: A propellent composition suitable for gas generators and cartridge-actuated devices comprises an oxidizing material dispersed in a silicone rubber or resin which is prepared by curing a polysiloxane comprising a proportion of acyclic alkenyl groups bonded to silicon atoms of the polysiloxane chain.  The polysiloxane may contain 0.1-25% by weight of alkenyl, e.g. vinyl, groups and may also contain methyl, ethyl, or propyl groups in the chain.  Suitable oxidizers are alkali metal and ammonium perchlorates and nitrates. Curing is effected at 150 DEG  C, or below in the presence of a catalyst, for example benzoyl peroxide, di-tertiary butyl peroxide, a platinum metal, or a platinum metal complex as described in Specification 1,027,051.  In examples (1) a mixture of polysiloxane gum containing methylvinyl siloxane units, fume silica, dimethylpinacoxysilane, potassium perchlorate, and 2,4-dichlorobenzoyl peroxide is extruded, cut, and heated at 120 DEG C.; (2) a mixture of polysiloxane fluid containing methylvinyl siloxane units, potassium perchlorate, cyclohexene platinous chloride solution, and trimethylsilyl end-stopped methylhydrogenpolysiloxane as a cross-linking agent is cast in a mould and heated at 100 DEG C.ALSO:A propellent composition suitable for gas generators and cartridge-actuated devices comprises an oxidizing material dispersed in a silicone rubber or resin which is prepared by curing a polysiloxane comprising a proportion of acyclic alkenyl groups bonded to silicon atoms of the polysiloxane chain.  The polysiloxane may contain 0.1-25% by weight of alkenyl, e.g. vinyl, groups and may also contain methyl, ethyl, or propyl groups in the chain.  Suitable oxidizers are alkali metal and ammonium perchlorates and nitrates. Curing is effected at 150 DEG  C. or below in the presence of a catalyst, for example benzoyl peroxide, di-tertiary butyl peroxide, a platinum metal, or a platinum metal complex as described in Specification 1,027,051. In examples (1) a mixture of polysiloxane gum containing methylvinyl siloxane units, fume silica, dimethylpinacoxysilane, potassium perchlorate, and 2,4-dichlorobenzoyl peroxide is extruded, cut, and heated at 120 DEG C.; (2) a mixture of polysiloxane fluid containing methylvinyl siloxane units, potassium perchlorate, cyclohexene platinous chloride solution, and trimethylsilyl end-stopped methylhydrogenpolysiloxane as a cross-linking agent is cast in a mould and heated at 100 DEG  C.
Patent GB-757557-A (GB)
Title: Improvements in or relating to self-sealing electric condensers
Filed: 1954-04-28
Abstract: One electrode of an electric capacitor comprises an alloy, preferably deposited from the vapour phase on to the surface of the dielectric of the capacitor, and the alloy composition is so chosen that it is hypereutectic with respect to the component of highest vapour pressure or greatest electrical conductivity.  The parent Specification describes the use of an eutectic alloy containing 40 per cent cadmium and 60 per cent bismuth; according to the present invention an alloy having a cadmium content in excess of 40 per cent is used.  The alloy may be deposited from a mixture of the vapours of the constituent metals; alternatively the two components may be deposited in succession from the vapour phase.
Patent GB-238601-A (GB)
Title: Improvements in or relating to escapement-actuating mechanism of typographical composing machines
IPC: B41B11/18
Filed: 1924-05-19
Abstract: 238,601. Linotype & Machinery, Ltd., and Jackson, A. F. May 19, 1924. Escapements for type - barmaking machines. Relates to means for releasing matrices, type, &c. from different magazine channels by successive operations of the same key. The key-rod 1 is movable laterally within a guide 2, and has an enlarged head 3, which is adapted to engage either of two escapement - rods 7, 8. The lateral adjustment is effected by a pin 4 on the key-rod in cooperation with a fixed guideplate 5 and a pivoted gravity switch 6. The plate 5 has a V-shaped recess 9, between the sides of which and the lower end of the switch 6 is formed an inclined guiding channel for the pin 4 on one side or the other of the switch. The switch is pivoted to a horizontally-sliding plate 11 having an inverted V- shaped recess 14, which is also engaged by the pin 4. Upon the ascent of the key-rod, the pin 4 shifts the plate 11, and causes the switch to rock, so that the key-rod is guided to the right and to the left of the switch alternately.
Patent GB-753762-A (GB)
Title: Improvements in or relating to safety tire
IPC: B60C5/12
Filed: 1954-04-28
Abstract: 753,762. Tubeless tyres; wheel rims. FIRESTONE TIRE & RUBBER CO. April 28, 1954 [May 5, 1953], No. 12297/54. Class 144 (2). A tubeless tyre 10 having a safety diaphragm or tube 21 with inextensible bead portions 30 is mounted on a rim 15 having circumferential rib-like projections 23 provided at the axially inner edges of the tyre bead seats 17 to define, with the toes of the tyre beads 13, seating grooves 26 for the diaphragm bead portions. The grooves 26 resist axially inward displacement of the diaphragm beads arising from centrifugal distortion of the diaphragm; to reduce the tendency for such bead displacement the diaphragm 21 is formed with a depressed crown portion 41 flanked by larger diameter shoulder portions 42. Fig. 1 shows a rubberized fabric, beaded diaphragm 21 having a flutter valve 40 and completed to tube form by a valved rubber flap 31 which seats in the well-base rim 15, the projections 23 of the rim being integrally formed in the rim itself. In an alternative arrangement the diaphragm is of open beaded construction and may have soft rubber extensions at each bead to lie against and seal with the sides of the rim base. Fig. 4 shows a further arrangement wherein the integral metal ribs 23 of Fig. 1 are replaced by the edge portions 51 of a rubber rim lining flap 50 having a transversely split resilient metal insert 53 and rubber-surfaced rivets 55 to hold the flap in position on the rim 15. Alternatively the flap 50 may be replaced by two rubber, metal insert, rings which are secured to the side walls of the rim base, or by two rubber rib formations bonded to the axially inner edges of the bead seats of the rim. Specification 701,240 is referred to.
Patent GB-691650-A (GB)
Title: Low-voltage incandescent lamp, especially for christmas-tree illumination consistingof series-connected lamps
Inventor: LOENN ERIC IVAN
IPC: H01K1/18
Filed: 1951-05-25
Abstract: 691,650. Electric incandescent tamps. LUMALAMPAN AKTIEBOLAG May 25 1951, No. 12331/51. Class 39(ii) A low voltage lamp for use more particularly in a decorative series lighting system has a filament 4 of inverted V-shape provided with an intermediate supporting-wire 5 that is sealed within a glass foot 7 and shaped to abut against the inside wall of the bulb in order to position the filament correctly, either by forming a bend or knee 19 and providing an end extension 16, both of which engage the wall of the bulb, or by bending vertically an end extension of the supporting wire so that it engages within the apex 15 of the bulb. An oxidized aluminium current bridge 9 of known type may be connected between the leading-in wires.
Patent GB-580305-A (GB)
Title: Improvements in or relating to spanners or wrenches
IPC: B25B13/08
Filed: 1944-06-28
Abstract: 580,305. Wrenches. TOUGH, A. J., and RUSTOK & HORNSBY, Ltd. June 28, 1944, No. 12334. [Class 61 (iii)] A multiple or other jaw spanner with the head rotatably mounted on the handle and adapted to be secured in any angular position, comprises rows of teeth 9, 10 on the adjacent faces of the head 1 and end of the handle 12, a screw 13 for clamping the toothed parts in locking engagement and a spring 20 for disengaging the teeth when the screw is relaxed. The spanner head may have a number of spaced jaw-apertures round its periphery and may be in the form of a stamping with strengthening webs between the jaw apertures.
Patent GB-1123581-A (GB)
Title: Improvements in temporary hut like structures
Inventor: LINDNER DAVID MURRAY
IPC: E04B1/343
Filed: 1965-03-24
Abstract: 1,123,581. Workmen's huts. ROLLALONG Ltd. and BRITISH INSULATED CALLENDER'S CONSTRUCTION CO. Ltd. 23 June, 1966 [24 March, 1965], No. 12423/65. Heading E1A. A workmans hut 11 is providied with a detachable awning 12 adapted to overlie and form a roof for a trench. The units 11, 12 are made up from corrugated aluminium panels which are provided with windows 19, 18 and ventilation louvres 14 as necessary. For joints between frame members and panels of the units and between the units themselves the Specification and remaining drawings, (not shown), should be referred to.
Patent GB-247436-A (GB)
Title: Improvements in the fuel-holders of kitcheners or kitchen ranges
IPC: F24B13/00
Filed: 1925-05-13
Abstract: 247,436. Lhonneux, V. May 13, 1925. Fuel - holders for kitchen ranges are formed from plain or ribbed steel or wroughtiron tube suitably shaped in known manner. Various forms are illustrated, Fig. 5 showing an externally-ribbed holder with walls thickening towards the centre, Fig 8, one of tapering section with an integrally-formed outlet for the gases, and Fig. 9 a holder of spherical form.
Patent GB-1267446-A (GB)
Title: Polymers of 2-pyrrolidone
IPC: C08G69/24
Filed: 1969-03-10
Abstract: 1,267,446. Poly-pyrrolidone. ALRAC CORP. 10 March, 1969[11 March, 1968; 30 Sept., 1968], No. 12445/69. Heading C3R.  2-Pyrollidone is polymerized in the absence of moisture-containing air in the presence of an alkaline polymerization catalyst that will not reduce the pyrrolidone ring and at least 0.01 wt. per cent of CO 2 . The C0 2  may be free C0 2  or a preformed alkali pyrrolidonate-C0 2  adduct; the prior disclosure of the use of alkali carbonate catalysts is acknowledged and the use of such catalysts in the absence of free C0 2  or said adduct is disclaimed. The process is said to lead to polymers of inherent viscosity (0.5% in hexafluoroisopropanol at 25‹ C.) between 2 and 8 with very uniform molecular weight (dispersity ratio Mw/Mn below 5) which are suitable for melt spinning. Numerous alkaline catalysts including quaternary ammonium hydroxides and conventional activators which may be but preferably are not present are mentioned.
Patent GB-781116-A (GB)
Title: Improvements in or relating to the treatment of fumes in steelmaking operations
Inventor: BANNISTER LEONARD CHARLES
IPC: C21C5/38
Filed: 1955-04-29
Abstract: 781,116. Refining steel. BRITISH OXYGEN CO.. Ltd. March 16. 1956 [April 29 1955], No. 12559/55. Class 72 A method of disposing of the fumes arising from the actipn of oxygen on molten iron or steel comprises confining the fumes above the surface of the metal and deliver-  ing them to the lower part of a blast furnace. As shown, iron, confined in a ladle 1 having an air tight cover 3,. is  treated with oxygen through a lance 5 and the fumes are drawn off by a fan 7 and delivered to a bustle pipe 9 of a blast furnace 10 and injected into the furnace through the ordinary tuyeres. Separate tuyeres may be used fitted at the same level as the normal tuyeres.
Patent GB-1215829-A (GB)
Title: Apparatus for applying sheet material
IPC: B29D30/16
Filed: 1968-03-15
Abstract: 1,215,829. Apparatus for applying rubber sheet to a tyre carcass. UNIROYAL ENGLEBERT FRANCE. 15 March, 1968 [29 March, 1967], No. 12606/68. Heading B7C. Layers V of rubber are applied to the sidewalls of a rotating tyre carcass T by feeding rubber sheet from supply rolls to operating heads (not shown) which have displaceable applicator arms 37, 37a, for applying leading edges of the rubber layers to the sidewalls, pressing rolls 40, 40a for pressing the layers on to the sidewalls, and cutters 45, 45a for cutting rubber layers of predetermined length on the pressing rolls. The applicator arms may be provided with perforated vacuum chambers 36, 36a at their ends to assist in the application of the layers of rubber to the sidewalls.
Patent GB-312634-A (GB)
Title: Improvements in treating cellulose material
IPC: D21C3/26
Filed: 1929-04-23
Abstract: 312,634. Euromerican Cellulose Products Corporation, (Assignees oi Dorner, B.). May 29, 1928, [Convention date]. Pulp, preparation of. - In a process for the preparation of cellulose, suitable for producing paper, artificial silk, and other cellulose products, from cornstalks, straw, and the like, the material is first finely shredded, leached with water, beaten, washed and screened, all as described in Specifications 283,851 and 286,211. The second stage comprises treatment with dilute alkali of less than 1 per cent strength, and washing, which removes silica and complex silicates, and generally acts as a more thorough washing operation. The third stage comprises another treatment with dilute alkali of not over 2 per cent strength by which the non-cellulosic material is dissolved. In the alkali treatments caramelization of the non- cellulosic material is avoided and the pentosans and similar materials are recovered in a form usable as stock food and for producing alcohol commercially. The leach liquor and alkali liquors obtained may be treated according to the process described in Specification 286,210, [Class 1 (ii), Inorganic compounds, other than &c.].
Patent GB-261621-A (GB)
Title: Improvements in and relating to lubricating devices
IPC: B60R17/00
Filed: 1926-05-17
Abstract: 261,621. Serpas, E. J., Estopinal, J. A., and Mestayer, R. F. May 17, 1926. Actuating by vibrations of vehicles; multiple - delivery piston pumps.- Lubricant supplied from a tank by a pump 34 into a casing 11 is distributed tn a number of outlet pipes 15 by a ported disc valve secured on a shaft 18 within the casing, the shaft being rotated by pawl and ratchet mechanism actuated by a slidable valve 44 acted on by the lubricant supplied by the pump. The disc valve comprises a gasket 22 bearing against the ported side of the casing and carried by a plate 21 secured to the shaft. The valve 44 has a stem 45 engaging a spring-pressed arm 27 rotatably mounted on the shaft, the arm carrying a spring- pressed pawl 30 engaging a ratchet wheel 19 secured on the shaft. The valve 44 works in a barrel 40<1> extending into the casing 11 and provided with a port 43 communicating with the casing. The. pump barrel 32 is formed beneath the casing 11, being provided with a valved inlet 36 from the tank and a valved outlet 39 to the barrel 40<1>. The plunger 34 is pressed outwards bv a spring 35, and the casing 11 is provided with a relay valve 47 delivering to the tank. As applied to a motor vehicle, the casing 11 is mounted on the frame immediately above the front axle, a weak spring being interposed between the axle and the plunger 34. As relative movement occurs between the frame and the axle during travel of the vehicle, the plunger 34 is moved up and down. Lubricant forced into the barrel 40<1> moves the valve 44 inwards, the stem 45 acting on the arm 27 to actuate the pawl and ratchet mechanism and the port 43 being uncovered at the end of its movement.
Patent GB-1360948-A (GB)
Title: Stabilized thermoplastic polyurethane composition
IPC: C08G18/79
Filed: 1972-03-17
Abstract: 1360948 Thermoplastic polyurethanes  SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 17 March 1972 12653/72 Heading C3R A stabilized thermoplastic polyurethane composition comprises (a) a thermoplastic polyurethane rubber, (b) an organic diisocyanate dimer of the structure  wherein X represents a hydrocarbon radical, and (c) a cross-linking inhibitor, which is a compound which inhibits the reaction between an isocyanate group and urethane and urea groups. The dimers of diphenylmethane diisocyanate or 2,4-toluene diisocyanate are preferred for use as the compound (b) and are used in amounts of up to 10% by weight of (a). Preferred cross-linking inhibitors are protonliberating agents, especially organic acids such as furoic acid, benzoic acid, stearic acid and alpha-naphthoic acid, optionally combined with a halogenated paraffin. The cross-linking inhibitor (c) is generally used in amounts of up to 10% by weight of the compound (a).
Patent GB-295673-A (GB)
Title: Automatic tensioning device for belts and the like
IPC: F16H7/12
Filed: 1927-05-16
Abstract: 295,673. Duhamel. M., and Constant, E. & L. May 16. 1927. Divided on and addition to 271,117. Tension arrangements.-In means for automatically increasing the tension of belts &c., with the load, of the kind described in the parent Specification, in which a pair of levers 1, 2, long and short respectively and interconnected by a spring J, turn on a pivot A and carry rollers D, E engaging the slack and driving spans respectively, of the belt, the pivot A, Fig. 2, lies outside both belt spans, or Fig. 3, is supported on a projection on a plate K bolted to the casing of the electromotor driving the belt.
Patent GB-405494-A (GB)
Title: Improvements in or relating to four-stroke cycle internal combustion engines with exhaust gas driven precompressors
IPC: F02B37/00
Filed: 1933-05-01
Abstract: 405,494. Scavenging and charging ; starting. BUCHI, A., 20, Salstrasse, Winterthur, Switzerland. May 1, 1933, No. 12674. Convention date, May 13, 1932. [Classes 7 (ii) and 7 (v).] In an engine having blowers driven by the exhaust gases, the cylinders are provided with positively-operated exhaust valves and with automatic inlet valves which control ports beyond the stroke of the piston and open only when the charging- pressure is in excess of the cylinder pressure. One of the inlet valves may serve also to admit starting-air. In the engine shown, exhaust past cam-actuated valves 13 is directed to a turbine 2 driving a blower 3, which delivers compressed charge to automatic inlet valves 14. There are several inlet valves 14 to each cylinder, and in some of the cylinders, one of these valves 14a may be used to admit starting-air. This air is prevented from entering the charging conduit 6 by non-return valves 17. The starting-air is supplied from a reservoir 16 through a pipe 26, valves 19, and pipes 15, the valves being worked by a cam on the exhaust cam shaft. This cam may be brought into action simultaneously with the opening of the starting valve 22.
Patent GB-216528-A (GB)
Title: Improvements in link chains for cycles
IPC: F16G13/06
Filed: 1924-05-23
Abstract: 216,528. Baltenwerk Akt.-Ges. May 24, 1923, [Convention date]. Driving-chains with separate joint pins.-In cycle chains of the kind wherein the outer link plates are connected together by pins 4 that are rotatable directly in circular blocks 7 which are non-rotatably fixed in the inner link plates by means of round spigots flattened at one side, the flat surfaces are formed at one end only of each block, the two blocks of each link being flattened at opposite ends to enable both link plates to be identical in shape.
Patent GB-854142-A (GB)
Title: The control of bacteriological sterilisation
Inventor: ROYCE ALEC
IPC: G01N31/22
Filed: 1958-04-22
Abstract: For determining when a gas sterilisation process is complete, there may be employed a device comprising an envelope permeable to said gas containing a liquid reagent reacting with said gas to produce a visibly detectable change with or without further treatment of said reagent.  By suitably regulating the thickness of the envelope and the concentration of the reagent, the capsule will respond to the gas in the same time as the contaminating organism is destroyed by the gas.  For use with ethylene oxide, a capsule containing an aqueous solution of magnesium chloride, hydrochloric acid may be used; a pH indicator (bromocresol purple, bromophenol blue) may be added to the contents of the capsule after exposure or may be included in the capsule: for methyl bromide there may be used a capsule containing ethanolamine and silver nitrate, the contents of which are added, after the desired contact with the gas, either to dilute nitric acid containing an adsorption indicator (phenosafranine) or to a solution containing nitric acid, ferric ammonium sulphate, ammonium thiocyanate and silver nitrate; for formaldehyde the capsule may contain methyl orange, hydroxylamine hydrochloride and sodium hydroxide.  The capsule which is preferably transparent or translucent may be constructed of polythene or polyvinyl chloride. Other sterilisation gases referred to are sulphur dioxide and hydrogen cyanide.